android.text.TextPaint#getFontMetricsInt ( )源码实例Demo

下面列出了android.text.TextPaint#getFontMetricsInt ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： MDPreference 文件： ContactChipDrawable.java

public ContactChipDrawable(int paddingLeft, int paddingRight, Typeface typeface, int textColor, int textSize, int backgroundColor) {
    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setColor(textColor);
    mPaint.setTypeface(typeface);
    mPaint.setTextSize(textSize);

    mTextPaint = new TextPaint(mPaint);
    mMetrics = new BoringLayout.Metrics();
    Paint.FontMetricsInt temp = mTextPaint.getFontMetricsInt();
    mMetrics.ascent = temp.ascent;
    mMetrics.bottom = temp.bottom;
    mMetrics.descent = temp.descent;
    mMetrics.top = temp.top;
    mMetrics.leading = temp.leading;

    mRect = new RectF();

    mMatrix = new Matrix();

    mPaddingLeft = paddingLeft;
    mPaddingRight = paddingRight;
    mBackgroundColor = backgroundColor;
}

源代码2 项目： material 文件： ContactChipDrawable.java

public ContactChipDrawable(int paddingLeft, int paddingRight, Typeface typeface, int textColor, int textSize, int backgroundColor) {
    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setColor(textColor);
    mPaint.setTypeface(typeface);
    mPaint.setTextSize(textSize);

    mTextPaint = new TextPaint(mPaint);
    mMetrics = new BoringLayout.Metrics();
    Paint.FontMetricsInt temp = mTextPaint.getFontMetricsInt();
    mMetrics.ascent = temp.ascent;
    mMetrics.bottom = temp.bottom;
    mMetrics.descent = temp.descent;
    mMetrics.top = temp.top;
    mMetrics.leading = temp.leading;

    mRect = new RectF();

    mMatrix = new Matrix();

    mPaddingLeft = paddingLeft;
    mPaddingRight = paddingRight;
    mBackgroundColor = backgroundColor;
}

源代码3 项目： document-viewer 文件： StringTexture.java

public void setText(final String text, final TextPaint paint) {
    final String oldText = mText;
    final int oldTextHeight = mTextHeight;

    mPaint = paint;
    mMetrics = paint.getFontMetricsInt();
    mText = text;
    mTextWidth = (int) Math.ceil(mPaint.measureText(mText));
    mTextHeight = mMetrics.bottom - mMetrics.top;

    if (mTextWidth > mCanvasWidth) {
        mText = TextUtils.ellipsize(mText, mPaint, mCanvasWidth, TextUtils.TruncateAt.END).toString();
        mTextWidth = (int) Math.ceil(mPaint.measureText(mText));
    }
    if (!CompareUtils.equals(mText, oldText) || mTextHeight != oldTextHeight) {
        if (mBitmap != null) {
            mBitmap.eraseColor(0);
        }
        mContentValid = false;
        mWidth = UNSPECIFIED;
        mHeight = UNSPECIFIED;
    }
}

源代码4 项目： PowerFileExplorer 文件： Styled.java

/**
     * Returns the advance widths for a uniform left-to-right run of text with
     * no style changes in the middle of the run. If any style is replacement
     * text, the first character will get the width of the replacement and the
     * remaining characters will get a width of 0.
     * 
     * @param paint the paint, will not be modified
     * @param workPaint a paint to modify; on return will reflect the original
     *        paint plus the effect of all spans on the run
     * @param text the text
     * @param start the start of the run
     * @param end the limit of the run
     * @param widths array to receive the advance widths of the characters. Must
     *        be at least a large as (end - start).
     * @param fmi FontMetrics information; can be null
     * @return the actual number of widths returned
     */
    public static int getTextWidths(TextPaint paint,
                                    TextPaint workPaint,
                                    Spanned text, int start, int end,
                                    float[] widths, Paint.FontMetricsInt fmi) {
// Jota Text Editor
//        MetricAffectingSpan[] spans =
//            text.getSpans(start, end, MetricAffectingSpan.class);
//
//		ReplacementSpan replacement = null;
        workPaint.set(paint);
//
//		for (int i = 0; i < spans.length; i++) {
//			MetricAffectingSpan span = spans[i];
//			if (span instanceof ReplacementSpan) {
//				replacement = (ReplacementSpan)span;
//			}
//			else {
//				span.updateMeasureState(workPaint);
//			}
//		}
//
//        if (replacement == null) {
            workPaint.getFontMetricsInt(fmi);
            workPaint.getTextWidths(text, start, end, widths);
//        } else {
//            int wid = replacement.getSize(workPaint, text, start, end, fmi);
//
//            if (end > start) {
//                widths[0] = wid;
//                for (int i = start + 1; i < end; i++)
//                    widths[i - start] = 0;
//            }
//        }
        return end - start;
    }

源代码5 项目： ThermometerView 文件： ThermometerView.java

public void initConfig() {
    if (minThermometerRadius >= maxThermometerRadius) {
        throw new UnsupportedOperationException("温度计形状设置有误。");
    }
    if (minMercuryRadius >= maxMercuryRadius || minMercuryRadius >= minThermometerRadius) {
        throw new UnsupportedOperationException("水银形状设置有误。");
    }
    if (minScaleValue >= maxScaleValue) {
        throw new UnsupportedOperationException("刻度值设置不正确");
    }
    setResetCurValue(curScaleValue);

    sumScaleValue = (maxScaleValue - minScaleValue) * 10;

    mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);

    mLinePaint = new Paint();
    mLinePaint.setAntiAlias(true);
    mLinePaint.setStyle(Paint.Style.FILL);
    mLinePaint.setStrokeWidth(scaleLineWidth);

    mPaint = new Paint();
    mPaint.setAntiAlias(true);
    mPaint.setStyle(Paint.Style.FILL);

    String title = "℃";
    mTextPaint.setTextSize(unitTextSize);
    textWidth = Layout.getDesiredWidth(title, mTextPaint);
    Paint.FontMetricsInt fmi = mTextPaint.getFontMetricsInt();
    titleHeight = -(float) (fmi.bottom + fmi.top);

    this.setLayerType(View.LAYER_TYPE_SOFTWARE, null); // 关闭硬件加速，否则阴影无效
}

源代码6 项目： MDPreference 文件： ContactChipSpan.java

public ContactChipSpan(CharSequence name, int height, int maxWidth, int paddingLeft, int paddingRight, Typeface typeface, int textColor, int textSize, int backgroundColor) {
    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setColor(textColor);
    mPaint.setTypeface(typeface);
    mPaint.setTextSize(textSize);

    mTextPaint = new TextPaint(mPaint);


    mRect = new RectF();

    mMatrix = new Matrix();

    mContactName = name;
    mPaddingLeft = paddingLeft;
    mPaddingRight = paddingRight;
    mBackgroundColor = backgroundColor;
    mHeight = height;
    mWidth = Math.round(Math.min(maxWidth, mPaint.measureText(name, 0, name.length()) + paddingLeft + paddingRight + height));

    int outerWidth = Math.max(0, mWidth - mPaddingLeft - mPaddingRight - mHeight);
    Paint.FontMetricsInt temp = mTextPaint.getFontMetricsInt();
    BoringLayout.Metrics mMetrics = new BoringLayout.Metrics();
    mMetrics.width = Math.round(mTextPaint.measureText(mContactName, 0, mContactName.length()) + 0.5f);
    mMetrics.ascent = temp.ascent;
    mMetrics.bottom = temp.bottom;
    mMetrics.descent = temp.descent;
    mMetrics.top = temp.top;
    mMetrics.leading = temp.leading;
    mBoringLayout = BoringLayout.make(mContactName, mTextPaint, outerWidth, Layout.Alignment.ALIGN_NORMAL, 1f, 1f, mMetrics, true, TextUtils.TruncateAt.END, outerWidth);
}

源代码7 项目： JotaTextEditor 文件： Styled.java

/**
     * Returns the advance widths for a uniform left-to-right run of text with
     * no style changes in the middle of the run. If any style is replacement
     * text, the first character will get the width of the replacement and the
     * remaining characters will get a width of 0.
     * 
     * @param paint the paint, will not be modified
     * @param workPaint a paint to modify; on return will reflect the original
     *        paint plus the effect of all spans on the run
     * @param text the text
     * @param start the start of the run
     * @param end the limit of the run
     * @param widths array to receive the advance widths of the characters. Must
     *        be at least a large as (end - start).
     * @param fmi FontMetrics information; can be null
     * @return the actual number of widths returned
     */
    public static int getTextWidths(TextPaint paint,
                                    TextPaint workPaint,
                                    Spanned text, int start, int end,
                                    float[] widths, Paint.FontMetricsInt fmi) {
// Jota Text Editor
//        MetricAffectingSpan[] spans =
//            text.getSpans(start, end, MetricAffectingSpan.class);
//
//		ReplacementSpan replacement = null;
        workPaint.set(paint);
//
//		for (int i = 0; i < spans.length; i++) {
//			MetricAffectingSpan span = spans[i];
//			if (span instanceof ReplacementSpan) {
//				replacement = (ReplacementSpan)span;
//			}
//			else {
//				span.updateMeasureState(workPaint);
//			}
//		}
//
//        if (replacement == null) {
            workPaint.getFontMetricsInt(fmi);
            workPaint.getTextWidths(text, start, end, widths);
//        } else {
//            int wid = replacement.getSize(workPaint, text, start, end, fmi);
//
//            if (end > start) {
//                widths[0] = wid;
//                for (int i = start + 1; i < end; i++)
//                    widths[i - start] = 0;
//            }
//        }
        return end - start;
    }

源代码8 项目： material 文件： ContactChipSpan.java

public ContactChipSpan(CharSequence name, int height, int maxWidth, int paddingLeft, int paddingRight, Typeface typeface, int textColor, int textSize, int backgroundColor) {
    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setColor(textColor);
    mPaint.setTypeface(typeface);
    mPaint.setTextSize(textSize);

    mTextPaint = new TextPaint(mPaint);


    mRect = new RectF();

    mMatrix = new Matrix();

    mContactName = name;
    mPaddingLeft = paddingLeft;
    mPaddingRight = paddingRight;
    mBackgroundColor = backgroundColor;
    mHeight = height;
    mWidth = Math.round(Math.min(maxWidth, mPaint.measureText(name, 0, name.length()) + paddingLeft + paddingRight + height));

    int outerWidth = Math.max(0, mWidth - mPaddingLeft - mPaddingRight - mHeight);
    Paint.FontMetricsInt temp = mTextPaint.getFontMetricsInt();
    BoringLayout.Metrics mMetrics = new BoringLayout.Metrics();
    mMetrics.width = Math.round(mTextPaint.measureText(mContactName, 0, mContactName.length()) + 0.5f);
    mMetrics.ascent = temp.ascent;
    mMetrics.bottom = temp.bottom;
    mMetrics.descent = temp.descent;
    mMetrics.top = temp.top;
    mMetrics.leading = temp.leading;
    mBoringLayout = BoringLayout.make(mContactName, mTextPaint, outerWidth, Layout.Alignment.ALIGN_NORMAL, 1f, 1f, mMetrics, true, TextUtils.TruncateAt.END, outerWidth);
}

源代码9 项目： WanAndroid 文件： WaveTextView.java

private void init(Context context, AttributeSet attrs) {
    TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.WaveTextView);
    mText = typedArray.getString(R.styleable.WaveTextView_text);
    mTextSize = typedArray.getDimension(R.styleable.WaveTextView_size, 26);
    mTextColor = typedArray.getColor(R.styleable.WaveTextView_color, Color.BLACK);
    A = typedArray.getInteger(R.styleable.WaveTextView_amplitude, 100);
    isBold = typedArray.getInteger(R.styleable.WaveTextView_style, 0);
    typedArray.recycle();

    mTextPaint = new TextPaint();
    mTextPaint.setAntiAlias(true);
    mTextPaint.setTextSize(mTextSize);
    mTextPaint.setColor(mTextColor);
    if(isBold == 1) mTextPaint.setFakeBoldText(true);
    //mTextPaint.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
    mTextPath = new Path();
    mTextWidth = (int) mTextPaint.measureText(mText);
    Paint.FontMetricsInt fontMetrics = mTextPaint.getFontMetricsInt();
    mTextHeight = fontMetrics.bottom - fontMetrics.top;
    Rect rect = new Rect();
    mTextPaint.getTextBounds(mText, 0, mText.length(), rect);
    mTextCenter = rect.height() / 2;

    //φ的取值范围为正弦函数的一个周期：2π
    mValueAnimator = ValueAnimator.ofFloat(0, (float) (2 * Math.PI));
    mValueAnimator.setInterpolator(new LinearInterpolator());
    mValueAnimator.addUpdateListener(animation -> {
        float progress = (float) animation.getAnimatedValue();
        φ = progress;
        a = (float) (1 - progress / (2 * Math.PI)) * A;
        LogUtil.d(TAG, "addUpdateListener(), a = " + a + ", φ = " + φ);
        postInvalidate();
    });
    mValueAnimator.setDuration(2500);
    postDelayed(() -> mValueAnimator.start(), 100);

    for(int i = 0; i <= SAMPLING_SIZE; i++) {
        float gap = (float) mTextWidth / SAMPLING_SIZE;
        mSamplingX[i] = i * gap;
        mMapX[i] = mSamplingX[i] / (float) mTextWidth * 4 - 2;
    }
}